1. Unit 8: Our Valuable Earth
Theme 15: Precious Resources

2. cultivate- to grow something
People cultivate trees on tree farms like farmers grow crops in fields.

3. Detectives are always trying to solve mysteries.
mystery- something that happens with no reasonable explanation for why it happened
Detectives are always trying to solve mysteries.

4. preserve- to keep something from changing or being damaged
Museums work very hard to keep their artifacts preserved.

5. Driving Mom’s car is a privilege for my older sister.
privilege- the honor or the pleasure of seeing or doing something special
Driving Mom’s car is a privilege for my older sister.

6. irrigation- the process of watering plants, especially farm crops in dry areas
The farmer used sprinklers as his irrigation system to water his crops.

7. renewable- something that can be made new over and over without running out
Sunlight is a renewable resource because we can use it to generate electricity without using it up.

8. diminish- to reduce or make less of something
It is important to save your money so that it does not diminish.

9. damage- to harm or wreck something
A tornado causes a great amount of damage to an area.

10. achieve- to be successful or reach a goal
When you work as a team you can achieve more success.

11. adequate- to have enough of what you need
It is important to have an adequate amount of supplies when you are making preparations for a hurricane.